102312331 has 4 divisors (see below), whose sum is σ = 111613464. Its totient is φ = 93011200.

The previous prime is 102312323. The next prime is 102312367. The reversal of 102312331 is 133213201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102312331 - 2³ = 102312323 is a prime.

It is a super-2 number, since 2×102312331² = 20935626149307122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102312731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4650550 + ... + 4650571.

It is an arithmetic number, because the mean of its divisors is an integer number (27903366).

Almost surely, 2^102312331 is an apocalyptic number.

102312331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102312331 is a deficient number, since it is larger than the sum of its proper divisors (9301133).

102312331 is an equidigital number, since it uses as much as digits as its factorization.

102312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301132.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 102312331 is about 10114.9558081091. The cubic root of 102312331 is about 467.7092866026.

Adding to 102312331 its reverse (133213201), we get a palindrome (235525532).

The spelling of 102312331 in words is "one hundred two million, three hundred twelve thousand, three hundred thirty-one".